List listTest2 = new ArrayList();
for (int i = 30; i < 40; i++) {
listTest2.add("item" + i);
}
assertTrue(list2.containsAll(listTest2));
assertTrue(list2.retainAll(listTest2));
assertSizeEventually(10,list1);
assertTrue(list1.removeAll(listTest2));
assertSizeEventually(0, list1);
}